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https://issues.apache.org/jira/browse/DRILL-3045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14720884#comment-14720884
 ] 

Aman Sinha commented on DRILL-3045:
-----------------------------------

Could you change the parameter DEFAULT_OFF_HEAP_ALLOCATION_IN_BYTES to 
DEFAULT_MAX_OFF....  to more accurately reflect the usage.   Also, is there a 
reason these are declared public ? Seems QueryContext is the only place where 
they are used. 

> Drill is not partition pruning due to internal off-heap memory limit for 
> planning phase
> ---------------------------------------------------------------------------------------
>
>                 Key: DRILL-3045
>                 URL: https://issues.apache.org/jira/browse/DRILL-3045
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>    Affects Versions: 1.0.0
>            Reporter: Victoria Markman
>            Assignee: Mehant Baid
>             Fix For: 1.2.0
>
>         Attachments: DRILL-3045.patch
>
>
> The symptom is: we are running simple query of the form "select x from t 
> where dir0='xyz and dir1='2015-01-01';" partition pruning works for a while 
> and then it stops working.
> Query does run (since we don't fail the query in the case when we failed to 
> prune) and return correct results. 
> drillbit.log
> {code}
> 015-04-19 15:54:22,027 [2acc305b-8f77-09af-1376-f6475c6a23c3:foreman] WARN  
> o.a.d.exec.memory.BufferAllocator - Unable to allocate buffer of size 5000 
> due to memory limit. Current allocation: 16776840
> java.lang.Exception: null
>       at 
> org.apache.drill.exec.memory.TopLevelAllocator$ChildAllocator.buffer(TopLevelAllocator.java:220)
>  [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.apache.drill.exec.memory.TopLevelAllocator$ChildAllocator.buffer(TopLevelAllocator.java:231)
>  [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.apache.drill.exec.vector.VarCharVector.allocateNew(VarCharVector.java:333)
>  [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.apache.drill.exec.vector.NullableVarCharVector.allocateNew(NullableVarCharVector.java:185)
>  [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.apache.drill.exec.planner.logical.partition.PruneScanRule.doOnMatch(PruneScanRule.java:187)
>  [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.apache.drill.exec.planner.logical.partition.PruneScanRule$2.onMatch(PruneScanRule.java:110)
>  [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.eigenbase.relopt.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:223)
>  [optiq-core-0.9-drill-r20.jar:na]
>       at 
> org.eigenbase.relopt.volcano.VolcanoPlanner.findBestExp(VolcanoPlanner.java:661)
>  [optiq-core-0.9-drill-r20.jar:na]
>       at 
> net.hydromatic.optiq.tools.Programs$RuleSetProgram.run(Programs.java:165) 
> [optiq-core-0.9-drill-r20.jar:na]
>       at 
> net.hydromatic.optiq.prepare.PlannerImpl.transform(PlannerImpl.java:275) 
> [optiq-core-0.9-drill-r20.jar:na]
>       at 
> org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.convertToDrel(DefaultSqlHandler.java:206)
>  [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.apache.drill.exec.planner.sql.handlers.ExplainHandler.getPlan(ExplainHandler.java:61)
>  [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.apache.drill.exec.planner.sql.DrillSqlWorker.getPlan(DrillSqlWorker.java:145)
>  [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at org.apache.drill.exec.work.foreman.Foreman.runSQL(Foreman.java:773) 
> [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:204) 
> [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>  [na:1.7.0_65]
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>  [na:1.7.0_65]
>       at java.lang.Thread.run(Thread.java:745) [na:1.7.0_65]
> 2015-04-19 15:54:22,027 [2acc305b-8f77-09af-1376-f6475c6a23c3:foreman] WARN  
> o.a.d.e.p.l.partition.PruneScanRule - Exception while trying to prune 
> partition.
> java.lang.NullPointerException: null
>       at 
> org.apache.drill.exec.vector.VarCharVector.allocateNew(VarCharVector.java:334)
>  ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.apache.drill.exec.vector.NullableVarCharVector.allocateNew(NullableVarCharVector.java:185)
>  ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.apache.drill.exec.planner.logical.partition.PruneScanRule.doOnMatch(PruneScanRule.java:187)
>  ~[drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.apache.drill.exec.planner.logical.partition.PruneScanRule$2.onMatch(PruneScanRule.java:110)
>  [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.eigenbase.relopt.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:223)
>  [optiq-core-0.9-drill-r20.jar:na]
>       at 
> org.eigenbase.relopt.volcano.VolcanoPlanner.findBestExp(VolcanoPlanner.java:661)
>  [optiq-core-0.9-drill-r20.jar:na]
>       at 
> net.hydromatic.optiq.tools.Programs$RuleSetProgram.run(Programs.java:165) 
> [optiq-core-0.9-drill-r20.jar:na]
>       at 
> net.hydromatic.optiq.prepare.PlannerImpl.transform(PlannerImpl.java:275) 
> [optiq-core-0.9-drill-r20.jar:na]
>       at 
> org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.convertToDrel(DefaultSqlHandler.java:206)
>  [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.apache.drill.exec.planner.sql.handlers.ExplainHandler.getPlan(ExplainHandler.java:61)
>  [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> org.apache.drill.exec.planner.sql.DrillSqlWorker.getPlan(DrillSqlWorker.java:145)
>  [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at org.apache.drill.exec.work.foreman.Foreman.runSQL(Foreman.java:773) 
> [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:204) 
> [drill-java-exec-0.8.0-SNAPSHOT-rebuffed.jar:0.8.0-SNAPSHOT]
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>  [na:1.7.0_65]
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>  [na:1.7.0_65]
>       at java.lang.Thread.run(Thread.java:745) [na:1.7.0_65]
> {code}



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